Hand piece switch adapter



FIG. 1 is a perspective view of a handpiece switch adapter as seen from the top, front and right sides;

FIG. 2 is a top plan view thereof, the bottom plan being a mirror image;

FIG. 3 is a right side elevational view thereof, the left side elevation being a mirror image;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is an exploded perspective view thereof; and,

FIG. 7 is an exploded top plan view thereof.

The broken line showing of the environment is for illustrative purpose only and forms no part of the claimed design. 

The ornamental design for a hand piece switch adapter, as shown and described. 